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Allow configuration of patroni's replication mode (#869) 

* Add patroni parameters for `synchronous_mode`

* Update complete-postgres-manifest.yaml, removed quotation marks

* Update k8sres_test.go, adjust result for `Patroni configured`

* Update k8sres_test.go, adjust result for `Patroni configured`

* Update complete-postgres-manifest.yaml, set synchronous mode to false in this example

* Update pkg/cluster/k8sres.go

Does the same but is shorter. So we fix that it if you like.

Co-Authored-By: Felix Kunde <felix-kunde@gmx.de>

* Update docs/reference/cluster_manifest.md

Co-Authored-By: Felix Kunde <felix-kunde@gmx.de>

* Add patroni's `synchronous_mode_strict`

* Extend `TestGenerateSpiloConfig` with `SynchronousModeStrict`

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>
This commit is contained in:
Leon Albers 2020-04-06 14:27:17 +02:00 committed by GitHub
parent 64389b8bad
commit 4dee8918bd
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8 changed files with 48 additions and 14 deletions
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4
charts/postgres-operator/crds/postgresqls.yaml
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@ -218,6 +218,10 @@ spec:
type: integer
retry_timeout:
type: integer
synchronous_mode:
type: boolean
synchronous_mode_strict:
type: boolean
maximum_lag_on_failover:
type: integer
podAnnotations:

6
docs/reference/cluster_manifest.md
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@ -217,6 +217,12 @@ explanation of `ttl` and `loop_wait` parameters.
automatically created by Patroni for cluster members and permanent replication
slots. Optional.
* **synchronous_mode**
Patroni `synchronous_mode` parameter value. The default is set to `false`. Optional.
* **synchronous_mode_strict**
Patroni `synchronous_mode_strict` parameter value. Can be used in addition to `synchronous_mode`. The default is set to `false`. Optional.
## Postgres container resources
Those parameters define [CPU and memory requests and limits](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/)

2
manifests/complete-postgres-manifest.yaml
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@ -67,6 +67,8 @@ spec:
ttl: 30
loop_wait: &loop_wait 10
retry_timeout: 10
synchronous_mode: false
synchronous_mode_strict: false
maximum_lag_on_failover: 33554432
# restore a Postgres DB with point-in-time-recovery

4
manifests/postgresql.crd.yaml
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@ -184,6 +184,10 @@ spec:
type: integer
maximum_lag_on_failover:
type: integer
synchronous_mode:
type: boolean
synchronous_mode_strict:
type: boolean
podAnnotations:
type: object
additionalProperties:

6
pkg/apis/acid.zalan.do/v1/crds.go
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@ -358,6 +358,12 @@ var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
"maximum_lag_on_failover": {
Type: "integer",
},
"synchronous_mode": {
Type: "boolean",
},
"synchronous_mode_strict": {
Type: "boolean",
},
},
},
"podAnnotations": {

2
pkg/apis/acid.zalan.do/v1/postgresql_type.go
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@ -125,6 +125,8 @@ type Patroni struct {
RetryTimeout uint32 `json:"retry_timeout"`
MaximumLagOnFailover float32 `json:"maximum_lag_on_failover"` // float32 because https://github.com/kubernetes/kubernetes/issues/30213
Slots map[string]map[string]string `json:"slots"`
SynchronousMode bool `json:"synchronous_mode"`
SynchronousModeStrict bool `json:"synchronous_mode_strict"`
}
//StandbyCluster

8
pkg/cluster/k8sres.go
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@ -49,6 +49,8 @@ type patroniDCS struct {
LoopWait uint32 `json:"loop_wait,omitempty"`
RetryTimeout uint32 `json:"retry_timeout,omitempty"`
MaximumLagOnFailover float32 `json:"maximum_lag_on_failover,omitempty"`
SynchronousMode bool `json:"synchronous_mode,omitempty"`
SynchronousModeStrict bool `json:"synchronous_mode_strict,omitempty"`
PGBootstrapConfiguration map[string]interface{} `json:"postgresql,omitempty"`
Slots map[string]map[string]string `json:"slots,omitempty"`
}
@ -283,6 +285,12 @@ PatroniInitDBParams:
if patroni.Slots != nil {
config.Bootstrap.DCS.Slots = patroni.Slots
}
if patroni.SynchronousMode {
config.Bootstrap.DCS.SynchronousMode = patroni.SynchronousMode
}
if patroni.SynchronousModeStrict != false {
config.Bootstrap.DCS.SynchronousModeStrict = patroni.SynchronousModeStrict
}
config.PgLocalConfiguration = make(map[string]interface{})
config.PgLocalConfiguration[patroniPGBinariesParameterName] = fmt.Sprintf(pgBinariesLocationTemplate, pg.PgVersion)

4
pkg/cluster/k8sres_test.go
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@ -70,11 +70,13 @@ func TestGenerateSpiloJSONConfiguration(t *testing.T) {
LoopWait: 10,
RetryTimeout: 10,
MaximumLagOnFailover: 33554432,
SynchronousMode: true,
SynchronousModeStrict: true,
Slots: map[string]map[string]string{"permanent_logical_1": {"type": "logical", "database": "foo", "plugin": "pgoutput"}},
},
role: "zalandos",
opConfig: config.Config{},
result: `{"postgresql":{"bin_dir":"/usr/lib/postgresql/11/bin","pg_hba":["hostssl all all 0.0.0.0/0 md5","host all all 0.0.0.0/0 md5"]},"bootstrap":{"initdb":[{"auth-host":"md5"},{"auth-local":"trust"},"data-checksums",{"encoding":"UTF8"},{"locale":"en_US.UTF-8"}],"users":{"zalandos":{"password":"","options":["CREATEDB","NOLOGIN"]}},"dcs":{"ttl":30,"loop_wait":10,"retry_timeout":10,"maximum_lag_on_failover":33554432,"slots":{"permanent_logical_1":{"database":"foo","plugin":"pgoutput","type":"logical"}}}}}`,
result: `{"postgresql":{"bin_dir":"/usr/lib/postgresql/11/bin","pg_hba":["hostssl all all 0.0.0.0/0 md5","host all all 0.0.0.0/0 md5"]},"bootstrap":{"initdb":[{"auth-host":"md5"},{"auth-local":"trust"},"data-checksums",{"encoding":"UTF8"},{"locale":"en_US.UTF-8"}],"users":{"zalandos":{"password":"","options":["CREATEDB","NOLOGIN"]}},"dcs":{"ttl":30,"loop_wait":10,"retry_timeout":10,"maximum_lag_on_failover":33554432,"synchronous_mode":true,"synchronous_mode_strict":true,"slots":{"permanent_logical_1":{"database":"foo","plugin":"pgoutput","type":"logical"}}}}}`,
},
}
for _, tt := range tests {